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Answer:</h3>
Vertebrates have backbones, while invertebrates do not.
Humans, for example, are vertebrates because we have backbones.
Answer:
cosmic background radiation
Explanation:
hope this helps!!
Answer:
you need to attach a photo.
Explanation:
You could argue that in early succession areas species may have not been adapted or evolved. In Darwin's theory, life began in a shallow, warm pond. If that is the case, species would then venture deeper when their area they are in is suitable and having success
We live in the troposphere, which is where we get our air from
